Note 1 - Basis of Presentation (Details Textual) $ in Millions	3 Months Ended		15 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2025 USD ($)
Number of Operating Segments	0		2
Number of Television Markets	113		113
Percent of US Television Households Reached	37.00%		37.00%
Number of Television Markets with Top-Rated Stations	78		78
Number of Television Markets with First and/or Second Rated Stations	99		99
Number of Television Markets, Telemundo Affiliate Group	44		44
Total Proceeds From Project	$ 5	$ 5
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]			Secured Overnight Financing Rate (SOFR) [Member]
Wells Fargo Bank, N.A. [Member]
Proceeds from Accounts Receivable Securitization	400	300
Accounts Receivable Securitization, Unsold Receivables	279	337	$ 279
Accounts Receivable Securitization, Total Receivables	579	$ 607	579
Wells Fargo Bank, N.A. [Member]
Accounts Receivable, Securitization Program, Maximum Capacity	$ 400		$ 400
Debt Instrument, Basis Spread on Variable Rate	1.25%